# [PD] Appending two signals together to create a third

hardoff goes bananas hard.off at gmail.com
Sat Sep 3 12:22:33 CEST 2011

casio CZ synth, yeah?  i made one of them in pd a few years ago.  sounded
pretty good.

On Sat, Sep 3, 2011 at 6:16 PM, Frank Barknecht <fbar at footils.org> wrote:

> On Wed, Aug 31, 2011 at 11:51:34PM -1000, Rick T wrote:
> > I have two signals Signal B and Signal C that I would like to append,
> which
> > would create a joined signal called Signal D.  I can create Signal B and
> > Signal C but the questions I have is:
> >
> > I created a image that may help explain it better
> > http://dl.dropbox.com/u/6576402/questions/flowchart_joined2.jpg
> >
> > 1) How do I append one signal onto the end of another. (see image
> labelled
> > 2)
> > 2) How can I vary Signal D's Frequency, Amplitude, and Phase? (See image
> > labelled 3)
>
> Attached are two example approaches to this problem. Both involve a
> phasor signal that is split into two phasors which are out of phase by
> half a period using [-~ 0.5] and [wrap~]. You can use these two phasors
> to alternately play two tables with tabread~, if your source signals
> are in tables, see combine-tables.pd
>
> If your source signals are not in tables, combine-signals.pd shows a
> crude switching between two signals using square waves out of phase with
> each other. You make these square waves from a phasor wrapped out of
> phase with itself just like above. (Of course you can also just use one
> square wave which you multiply by -1 and shift up by [+~ 1] after
> creation.)
>
> Ciao
> --
> Frank
>
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